diff --git a/src/corelib/text/qstringconverter.cpp b/src/corelib/text/qstringconverter.cpp
index 90f277ba610..7f68c5113eb 100644
--- a/src/corelib/text/qstringconverter.cpp
+++ b/src/corelib/text/qstringconverter.cpp
@@ -2374,4 +2374,10 @@ const char *QStringConverter::nameForEncoding(QStringConverter::Encoding e)
     \sa requiredSpace
 */
 
+/*!
+    \fn char16_t *QStringDecoder::appendToBuffer(char16_t *out, QByteArrayView in)
+    \since 6.6
+    \overload
+*/
+
 QT_END_NAMESPACE
diff --git a/src/corelib/text/qstringconverter.h b/src/corelib/text/qstringconverter.h
index f10aa3b6d3f..373c1ad1e91 100644
--- a/src/corelib/text/qstringconverter.h
+++ b/src/corelib/text/qstringconverter.h
@@ -140,6 +140,8 @@ public:
         }
         return iface->toUtf16(out, ba, &state);
     }
+    char16_t *appendToBuffer(char16_t *out, QByteArrayView ba)
+    { return reinterpret_cast<char16_t *>(appendToBuffer(reinterpret_cast<QChar *>(out), ba)); }
 
     Q_CORE_EXPORT static QStringDecoder decoderForHtml(QByteArrayView data);
 
diff --git a/tests/auto/corelib/text/qstringconverter/tst_qstringconverter.cpp b/tests/auto/corelib/text/qstringconverter/tst_qstringconverter.cpp
index c93983293c4..253749ede99 100644
--- a/tests/auto/corelib/text/qstringconverter/tst_qstringconverter.cpp
+++ b/tests/auto/corelib/text/qstringconverter/tst_qstringconverter.cpp
@@ -252,8 +252,8 @@ void tst_QStringConverter::invalidConverter()
 
         decoder.resetState();
         QVERIFY(!decoder.hasError());
-        QChar buffer[100];
-        QChar *position = decoder.appendToBuffer(buffer, "Even more");
+        char16_t buffer[100];
+        char16_t *position = decoder.appendToBuffer(buffer, "Even more");
         QCOMPARE(position, buffer);
         QVERIFY(decoder.hasError());
     }